Hose-coupling.



P. KRISGHER.

HOSE GOUPLING. APPLIUATION FILED rma. 2a, 1909.4

.Patlltli Mal. 8, 1910. E?. 3

` E1/n? E@ fwwy UNITED STATE-s PATENT oFFICE.

PETER fKfRlsCHER, 0F HAGEN, GERMANY.

HOSE-COUPLING.

Specification of Letters Patent.

-Application iled February 23, 1909. Serial No. 479.485.

To all whom 'it may concern:

Be it known that I, PETER KRISCHER, a subject of the German Emperor, residing at Hagen, in Westphalia, in Germany, have in- -vented lcertain new and useful Improvements nut 1n such afnia'n'ner that on releasing said` nut when the connection has to be brdkena releasin movement of the hollow`cone` also takes -p ace by unscrewing the nut itself. The connection of the hollowv cone with the nut has Vthe further advantage that both parts cannot be separately lost.

The object of the invention is attained preferably by inserting a ring between the" hollow' cone and the thread o f thenut, which ring on breaking the connection exercises pressure on the hollow cone and removes it from the tube or Inemberfto which the oon'- nection is made. By dispensing with a 'special ring, the projecting edge of the hollow cone can forexample-be provided with .a thread, and the hollow cone be'conne'ctedto the nut by means of pins, screws or the like. Embodiments of the invention -are shown in the accompanying dra ing in which-v Figure 1 1s a sectional' elevation showing the coupling in. section. Fig. 2 .is a section of a modification; Figs. 3,.;4 and 5 are detail views of rings hereinafter referred to. Figs. 6 and 7 are sections of further modifications and Fig. 8 is a. section on line A-A1 of Fig. 7.-

The cock-a, the. discharge end onlyof which is shown, terminates in the known manner in a conical tube b and is provided above said tubewith a thread c. The endi of the hose d is assed over the tube b whereupon the hol ow 'cone e is actuated by rotatin the nut 'f so that it rigidly grips the hose etween said hollow cone e and tube b. Upto this point the present invention presents no novelty over similar known devlces.I

The'hollow cone e is furnished withan into the yconstruction has over outwardly extended liange at its upper end which is provided with an external thread e', and in the lower part of the nut an annular Patented Mar. 8.1910.

groove is formed adapted to receive the threaded ange of the cone. The groove is here shown as made wider than the thickness of the flange. Threading the flange permits it to be turned onto the nut so that it may occupy a position in the groove thereof. When disposed in said groove its thread disengages vthe thread of the nut and the nut is, therefore, free to be .turned independently, and thereby rotated with respect to the cone. When screwing the nut onto the conduit the bottom wall of the groove thereof engages acts to draw the cone onto the hose` and firmly grip it. On releasing lthe nut, its thread, which forms the top wall of the groove, bears upon the thread on the flange of the hollow cone e and thus forces said cone away from the tube b. groove in the nut wider than the thickness of the iange on the cone, it will be observed that the nut may be turned at the beginning vof the releasing operation without moving the cone, and then by a vfurther movement the under side of .the flange on the cone, and

By making the the nut will engage the' cone and move it Y along byj aj directl thrust thereupon.

- In the construction-shown in Fig. 2, the flange`\of the hollow cone e is not provided with a thread but an elastic split ring L is arranged on said flange and hence becomes 'inserted in the groovefg, examples of said ring being shown in Figs. 4 and 5. On in' sertion the ring is compressed-and placed wall thereof owing to. its spring tension. lVhen the nut f is disengaged the ring abuts against the edge of the thread extension and against the edge of the hollow'cone e. VThis that shown in Fig. l

groove g, lying closely against the the advantage that the ring can be quickly inserted and that when releasing the hollow -cone the nut thread is not affected. Instead of the split elastic ring there may'also 'be inserted a threaded ring z', as shown in Fig. 3, vadapted to co-act with thethread in the nut.

A In -the construction shown in Fig. 6, the disconnection of the cone c is not prevented Iby inserted rings or the like, but an Vannular groove Ic is formed in the outer .edge of the cone in which groove engage small screws Z carried by the nut. This method of conthe tapered `end of sai nection does not hinder the movement or rotation of the nut and answers the same purpose as the constructions described above.

Figs. 7 and 8 show another construction in which the connection is effected by pins fm, suitably united to a IIJ-shaped bow, in

-construction `can be used.

In a similar manner in which the hose cl is connected to a cock tube as described, the connection of two hose lengths may be etfected, the gripping device having only to be duplicated.

What ll claim as my invention and desire to secure by Letters Patent of the United States is Y l. A hose coupling comprising in combination a conduit having'a tapered end, a hollow cone adapted to rip the hose against il conduit having 4an outwardly extended llangev at its upper end, a nut adapted to be screwed onto the conduit havin anA internal, annular oove to receive said flange, the bottom wa l of said groove engaging the under side ot said flange when the nut is screwed onto the conduit to thereby draw the cone onto the hose, and the top wall of said groove engaging means on the flange when unscrevving canoas said nut to thereby remove the cone, substantially as described.

2. A hose coupling comprising in combination a conduit having a tapered end, a

hollow cone ada ted to grip the hose against of said conduit having an outwardly extended flange at its upper end,

the tapered en a ring resting on said flange, anut adapted to be screwed onto the conduit-.having an external, annular groove to receive said Flange, the bottom wall of said groove engaging theunder side of said flange when the nut is screwed onto the conduit to thereby draw` the cone onto the hose, and the top y wall of' said cone engaging said ring on the flange when unscrevving said nut to thereby remove the cone, substantially as described.

3. A hose coupling comprising in combination a conduit having'a tapered end, a hollow cone adapted to grip the hose against the tapered end of said 4conduit having an outwardly extended flange at its upper end, a nut adapted to be screwed onto the conduit having an external annular groove to receive said flange which is made wider than the thickness of the flange, the bottoni Wall of said groove engaging the under side of said flange when the nut is screwed onto the conduit to thereby draw the cone onto the hose, and the top Wall of said groove engaging means on the flange when unscrewing said nut to thereby remove the cone, substantially as described.

ln witness whereof l have signed this specification in the presence of two witnesses.

rarita Kaiserina. [a a] Witnesses @r'ro KNIG, Wren( Binnen. 

